State ur observation whrn dil.hydrochloric acid is added to magnesium ribbons

Magnesium ribbon is just another form of magnesium metal. This reacts with hydrochloric acid (and virtually all other acids) to form the acid salt of magnesium and hydrogen:

Mg + 2HCl = MgCl2 + H2

Hydrogen is a gas and will be seen as bubbles. However, it is also very explosive, so do not have any flames around when you do it, unless you know exactly what you are doing! Magnesium chloride is soluble, so the magnesium ribbon will slowly disappear into solution.

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MgCl2+H2
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I don't know if the information I'm giving you is any help, but my science class was doing an experiment on hydrochloric acid and when it's mixed with magnesium ribbon. We found out that the less concentrated it was.. the slower the ribbon oxidized and stuff... I hope this helps..
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